Function time_util::system_time_from_millis_in_tz

pub fn system_time_from_millis_in_tz<'de, TZ, D>(
    deserializer: D
) -> Result<SystemTime, D::Error> where
    D: Deserializer<'de>,
    TZ: TimeZone, 

Deserialize a SystemTime from a timestamp containing the milliseconds since 1970-01-01 in a given time zone.

The given time zone type specifies the time zone in which the to-be-parsed time stamp is provided in. It will then be converted to UTC.